B46
APPLICATIONS
Dedicated to Sub-Bass applications when high power handling
is not specified, these drivers are able to cover a wide frequency
band, ranging from 30Hz to 500Hz with remarkable sonic
properties (even considering directivity pattern) that allow them
to be used in a three-way Sound Reinforcement system as well as
in a specific Sub system of medium input power.
The recommended enclosure is a Reflex type with volume ranging
from 200L to 250L tuned from 38Hz to 40 Hz.
FEATURES
Power handling capacity 500 W AES
Reference efficiency(1W @ 1m) 98 dB SPL
SPL max (continuous) 121dB SPL
Usable frequency range 30-1200 Hz
Environmental withstanding Outdoor
DESIGN CONCEPT
DEFLECTION CONTROLLED DIAPHRAGM optimized for dynamic
damping. DEFLECTION CONTROLLED DIAPHRAGM technology
consists in optimizing the shape and material of the diaphragm so
that it works as a mechanical transmission line, to avoid breaking
modes as well as mechanical threshold which destroy sound
quality.
This leading edge technology offers substantial sonic advantages.
Among them: sound coherency, fast transients, stable sound
imaging, high sensitivity, wide frequency range and reduced
directivity pattern.
VENTED COMPACT MAGNET SYSTEM. It has been carefully
optimized to obtain maximum transducing efficiency while
avoiding unlinear behavior such as coil inductance variation with
position, flux modulation, harmonic distortion, rest position offset,
air compression and off-axis voice-coil pushing.
Its design incorporates a T-shaped and vented pole piece, and
a flux stabilization ring. It also takes into consideration
demagnetization at cold temperatures.
INTERCOOLER SYSTEM (patented). Entirely integrated into the
loudspeaker itself, the INTERCOOLER SYSTEM extracts the heat
produced by Joule effect in the voice-coil by the means of an air
flow directed through the heatsink rims of the basket by the
motion of the dust-cap and the spider.
The gain brought about by this technology is over 20 % of extra
power, so for example, a 3”coil according to this design has
the same power handling capacity as a classical 4”one.
ARCHITECTURAL SPECIFICATIONS
NOMINAL DIAMETER : 460 mm.
FRAME : Aluminum alloy pressure
die-cast basket with patented
INTERCOOLER SYSTEM.
MAGNET SYSTEM : 3”highly energized,
heat extracting design with vented
pole piece and flux stabilizing ring.
VOICE COIL : High-temperature
stabilized copper ribbon wound on
high-strength glass polyimide former.
CONE ASSEMBLY : High-strength
cellulose fiber cone impregnated and
front-coated with damped resins,
fitted with central carbon-fiber dome
and double roll, treated and damped
fabric surround.
SPEAKER MASS : 9.10 kg.
PROFESSIONAL SERIES
8 Ω
18” Bass Extended Drivers
High Efficiency
High Sounding Quality
7510
7560
4 Ω
Ø 457 max.
Ø 422 max.
Ø 476 max.
(on angles)
+
Red dot
15
169 max.
2 x screw button
terminals
8 x Ø 7 Holes eq. spaced on Ø 454
Ø 204 max.
7510 7560
TYPICAL CHARACTERISTICS
Rated impedance Z 8 4 Ω
Reference efficiency (1 W@1 m) - 98 98 dB SPL
Usable frequency range
1
- 30-1200 30–1200 Hz
Power handling capacity
2
(AES) - 500 500 W
Max Sound Pressure Level
3
SPL
max
121 121 dB SPL
Min. impedance modulus Z
min
6.2 @ 220Hz 3.2 @ 230Hz Ω
Voice-coil inductance
4
@ 1 kHz L
e1k
1.47 0.73 mH
@ 10 kHz L
e10k
0.62 0.31 mH
Bl product Bl 23.4 16.4 N/A
Moving mass M
ms
0.157 0.157 Kg
THIELE-SMALL PARAMETERS : TYPICAL (QC LIMITS)
Resonance frequency
5
F
s
36 (±6) 36 (±5) Hz
DC resistance
6
R
e
5.6 (±0.5) 3.0 (±0.4) Ω
Mechanical quality factor Q
ms
3.6 3.6 1
Electrical quality factor Q
es
0.36 0.40 1
Total quality factor Q
ts
0.33 0.37 1
Mechanical suspension compliance C
ms
124 124 10
-6
m/N
Effective piston area S
d
0.128 0.128 m
2
Equivalent C
as
air load V
as
0.286 0.286 m
3
Max. linear excursion X
max
7.0 7.0 mm
Linear displacement volume V
d
0.896 0.896 10
-3
m
3
Half-space efficiency 3.6 3.3 %
Unity load volume V
as
Q
ts
2
31.1 39.4 10
-3
m
3
ABSOLUTE MAXIMUM RATINGS
Short term max. input voltage
7
V
max
125 90 V
Max. excursion before damage X
dam
16 16 mm
Ambient operating temperature –10 to +50 °C
Storage temperature
8
–20 to +70 °C
Environmental conditions
9
Outdoor
APPLICATION INFORMATION
Air volume occupied by the driver
10
6.2 6.2 10
-3
m
3
Speaker net mass 9.1 9.1 Kg
Recommended reflex box V
b
/F
b
200 / 40 250 / 38 L / Hz
Electrical polarity A positive voltage applied on the red
terminal produces forward cone motion.
PHYSICAL CHARACTERISTICS
PHL Audio S.A. provides these specifications as representative of current production after conditioning. Because of our continuous research, they are subject to change without notice.
SPECIFICATION NOTES
Note 1 : Allowing for energy response, excursion
capability, Power spectrum, and -3dB low
freq. roll-off for standard reflex tuning.
Note 2 : Established at 20°C ambient temp, according to
AES2-1984 standard using IEC268-1 simulated
programme signal and a 150 liter Bass-Reflex test
enclosure tuned at 40Hz.
Note 3 : Established at 1m on axis of the loudspeaker mounted
in test enclosure, when driven at full AES Power
Handling Capacity, including 4dB of thermal
compression loss.
Note 4 : Measured at 20 mA in free air.
Note 5 : Measured at 20 mA and 20°C ambient temp.
in free air conditions, after full run and rest.
Note 6 : Measured at 20°C ambient temp.
QC limits are ±10%
Note 7 : Stated in RMS voltage according to IEC 268-5.
Note 8 : Includes shipping conditions. The lower limit prevents
from demagnetization.
Note 9: Our products are classified in three categories :
Indoor, Outdoor, and Outdoor
✚
for permanent
outdoor use or severe conditions.
Note 10 : Calculated for front mounting on to a 18 mm thick
board.
461, rue des chênes ■ Z.A
77590 CHARTRETTES
FRANCE
Tél : 33 01 64 81 29 80
Fax : 33 01 60 69 10 28
e-mail : [email protected]
http: //www.phlaudio.com
7510
■
7560
18” Bass Extended Drivers
/